Andre Agassi won his opening match of the year 6-4, 6-4 over Ricardo Mello of Brazil on Monday at the International Tennis Championships. Agassi had played only one match since reaching the U.S. Open final last September. He sprained his left ankle playing racquetball Oct. 12 and aggravated the injury during the season-ending Tennis Masters Cup in Shanghai, where he was upset by Nicolay Davydenko in...